Table 8.
Multiple meta-regression analysis, predicting between-study variance in unidimensional outcomes using the level of similarity between active and sham control groups for a number of selected features in a sample of all large physiotherapy and rehabilitation exercise trials.
| Descriptives | |||||||
|---|---|---|---|---|---|---|---|
| Mean ES | Mean (SD) similarity rating (individualisation) | Mean (SD) similarity rating (fidelity monitoring) | R 2 | k | |||
| −0.46 | −0.17 (1.3) | 1.0 (1.1) | 0.62 | 12 | |||
| Homogeneity analysis | |||||||
|---|---|---|---|---|---|---|---|
| Q | Df | P | T 2 | I2 | |||
| Model | 12.28 | 2 | 0.0022 | 0.048 | 83.7% | ||
| Residual | 7.67 | 9 | 0.5678 | 0.00 | 0% | ||
| Total | 19.95 | 11 | 0.046 | ||||
| Regression coefficients | |||||||
|---|---|---|---|---|---|---|---|
| B | SE | −95% CI | +95% CI | Z | P | Beta | |
| Constant | −0.73 | 0.17 | −1.07 | −0.39 | −4.23 | . 0000 | 0.0 |
| Similarity: individualisation | −0.24 | 0.11 | −0.45 | −0.3 | −2.2 | 0.0276 | −0.56 |
| Similarity: fidelity monitoring | 0.18 | 0.13 | −0.07 | 0.42 | 1.39 | 0.1647 | 0.35 |
| Method of moments random effects variance component | |||||||
| v = 0.11 | |||||||
Means and variance of the similarity ratings included in the model are provided, having a possible range of −2 (different for all studies) to 2 (similar across all studies).